Joint-piece for electrical conductors



(No Model.)

E. IVINS.

JOINT PIECE ECE ELECTRICAL CCNDUCTCES.

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above and midway between these two.

UNITED STATES PATENT OEEICE.

ELLIVOOD IVINS, OF PHILADELPHIA, PENNSYLVANIA.

JOINT-PIECE FOR ELECTRICAL CONDUCTORS.

SPECIFICATION forming part of Letters Patent No. 586,439, dated July 13, 1897. Application led November Il, 1895. Serial No. 611,732. (No model.)

To all wiz/01u t may concer/L.-

Be it known that I, ELLWOOD IVINS, a citi- Zen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Joint-Pieces for Electrical Conductors, of which the following is a speciiication.

The object of my invention is to provide a joint-piece for electrical conductors which is of light weight, can be cheaply manufactured, can be readily applied to the wires to be joined, and will insure good electrical connection between said wires, and this object I attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in which- Figure l is a perspective view of a joint for electrical conductors made in accordance with my invention. Fig. 2 is a plan or top view of the same. Fig. 3 is a transverse sectional view on a larger scale. Fig. 4 is a view illustrating the course taken by the end portion of each of the wires. Fig. 5 is a perspective view illustrating another form of joint made in accordance with my invention. Fig. 6 is a transverse section of the same on a larger scale, and Figs. 7, 8, and 9 are views illustrating modifications of my invention.

In carrying out my invention I prefer to take a seamless tube or tube-blank and draw the same so as to indent its sides and form a joint-piece with three independent tubes or tubular receptacles l, 2, and 3, the tubes in the j oint-piece shown in Fig. l being disposed in triangular form-that is to say, two being side by side in the same plane and the other In making a joint or connection with this j oint-piece one of the wires, say the wire 4, is passed through the tube l in one direction, say from the right, and the other wire 5 is passed through the tube 2 in the opposite direction, the end portion of each wire being permitted to project for some distance beyond the end of the tube through which it is passed. The end portion of the wire il is then passed over the wire 5, bent back upon itself, and thrust into one end of the tube 3, and the end portion of the wire 5 is passed under the wire 4 and then bent back upon itself and thrust into the opposite end of said tube 8, after which the wires are drawn tight, so as to pull their loops 6 close up to the ends of the jointpiece. This has the effect not only of causing the loop of the wire 4 to bear firmly against the Wire 5 and the loop of the wire 5 to bear with equal force against the wire 4, but it also draws the said wires firmly into contact with the end portions of the tubes to which they are adapted, hence insuring a good electrical contact independent of the contact of the wires with the tubes between the ends of the latter, so that perfect electrical connection between the two wires is insured.

In Figs. 5 and 6 I have shown a joint-piece in which the three tubular portions l, 2, and 3a are 'disposed side by side in the same plane instead of being arranged triangularly, as shown in Figs. l, 2, and 3, the course of the wires, however, being substantially similar in both cases.

In Fig. 7 I have shown a triple tube with joint, and in Fig. 8 I have shown three separate tubes secured together by soldering or brazing; but I prefer in all cases to form the triple tube from a single seamless-tube blank.

lVhile I also prefer in every case to dispose the wires in the manner described, so that a loop of each wire will press firmly upon the other wire, such disposal is not absolutely essential to the broadest embodiment of my invention. For instance, one wire may pass through the tube l and have its end portion bent backward into one end of the tube 2, and the other Wire may pass through the tube 3 and have its end portion bent back into the opposite end of said tube 2, las shown in Fig. 9, neither wire crossing the other.

Having thus described my invention, I-

claim and desire to secure ent- A,

l. A joint-piece for electrical conductors, said j oint-piece consisting of a seamless tube, indented so as to form three tubes or channels, two of which are available for the passage of the wires to be joinediand the other for the reception of the backwardly-bent ends of said wires, substantially as specified.

Letters Pat- 2. A joint-piece for electrical conductors,

said joint-piece consisting of a seamless tube having its sides indented so as to form three independent tubes arranged in triangular form, substantially as specied.

3. The combination of the j oint-piece con- IOO ro joint-piece, a loop of one Wire through which the other Wire is passed and upon which it bears, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ELLWOOD IVINS.

Vitnesses:

Jos. H. KLEIN, F. E. BECHTOLD. 

